W.E. Anderson H3 Serie Especificaciones – Instrucciones De Operación E Instalación

Series H3 Differential Pressure Switches actuate one or
two single pole, double throw (SPDT) snap switches in
response to increasing or decreasing pressure of
compatible gases or liquids. Four field adjustable operating
ranges are available allowing set-points up to 200 psid. All
models are suitable for hazardous locations and also
include weatherproof housings as detailed in the chart
below. Read and understand instructions completely before
proceeding with installation or operation.
MODEL NUMBER DEFINITIONS
1 2 3
H3 ___ – ___ ___ ___ – ___ ___
Wetted Materials
1
A – Aluminum/Nitrile
B – Brass/Nitrile
S – 316 SS/Fluoroelastomer
2
Operating Range
1 – 10 to 180 in. w.c. (2.48 - 44.78 kPa)
2 – 0.5 to 15 psid
3 – 5 to 70 psid
4 – 10 to 200 psid
3
Circuit
S – SPDT
D – DPDT
Electrical Connections
4
C – Terminal block(s) ATEX Compliant
Construction
T – Terminal block(s) UL and CSA approved
L – Wire leads
Options
5
MV – Gold contacts
DR – Drain/Breather
VIT – Fluoroelastomer diaphragm/O-ring option
where not standard.
W.E. ANDERSON DIV., DWYER INSTRUMENTS, INC.
P.O. BOX 358 • MICHIGAN CITY, INDIANA 46361 U.S.A.
Series H3 Differential Pressure Switches
Specifications - Installation and Operating Instructions
4 5
(0.03 - 1 bar)
(0.34 - 4.8 bar)
(0.7 - 13.8 bar)
COVER SET
COVER
SCREW
3/4 NPT CONDUIT
CONN.
5-3/8
(136.53)
2-13/32
(61.12)
31/32
(24.61)
(4.37) DIA. MOUNTING HOLES
C PROCESS CONN.
IN MOUNTING BRACKET
1-25/32
OPTIONAL DRAIN
3-9/16
(90.49)
4
(101.6)
SPECIFICATIONS
Wetted Materials: See pressure chamber and diaphragm material
in model chart.
Temperature Limit: -4 to 220°F (-20 to 104°C), ATEX: -20 to
90°C (-4 to 194°F).
Pressure Limit: 1500 psig (103 bar).
Enclosure Rating: See ratings chart.
Switch Type: SPDT or DPDT snap switch.
Electrical Rating: 5A @ 125/250 VAC (V~), 30 VDC (V
option: 1A @ 125 VAC (V~); 1A res., .5A ind. @ 30 VDC (V
Electrical Connections: See model chart.
Conduit Connection: 3/4˝ female NPT.
Process Connection: 1/8˝ female NPT.
Mounting Orientation: Vertical.
Set Point Adjustment: Internal screw.
Weight: 4 lb, 2 oz (2 kg).
Deadband: Approximately 5% of range.
HAZARDOUS LOCATION/WEATHERPROOF RATINGS
MODEL
UL
H3 _ – _ _ C
—
CI. I, Gr.B, C & D
H3 _ – _ _ L
CI. II, Gr.E, F & G
NEMA 4X
H3 _ – _ _ T
H3 _ – _ _ C-DR
—
CI. I, Gr.B, C & D
H3 _ – _ _ L-DR
CI. II, Gr.E, F & G
NEMA 3
Attention: Units without the "C" suffix are not Directive 94/9/EC (ATEX) compliant. These units
are not intended for use in potentially hazardous atmospheres in the EU. These units may be CE
marked for other Directives of the EU.
Phone: 219/879-8000
Fax: 219/872-9057
Bulletin E-78
17/32
1-3/4
(13.5)
(44.45)
3
(45.24)
(76.2)
1/8 NPT HIGH PRESSURE CONN.
1/8 NPT LOW PRESSURE CONN.
Directive 94/9/EC ATEX
CSA
Compliant
0344
II 2 G Ex d IIB
—
-20°C≤ T amb ≤ 75°C T6
EC-Type Certificate No.
KEMA 03ATEX 2584
IP56
CI. I, Gr.B, C & D
CI. II, Gr.E, F & G
NEMA 4
0344
II 2 G Ex d IIB
-20°C≤ T amb ≤ 75°C T6
—
EC-Type Certificate No.
KEMA 03ATEX 2584
IP54
—
www.dwyer-inst.com
e-mail: info@dwyer-inst.com
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